I'm running a toon right now in mostly "old school" mode, thanks to this thread. My main rule is I cannot procure anything that isn't part of system, mission, or TF rewards. So, I got absolutely nothing from P2W, and did not pick up stuff that would've normally been a part of my old account (Pocket D, Minor Jump Packs, Ninja Run, etc.). But I did accept the temp XP anniversary boost that everyone got.
Build-wise, I figured I'd be doing some soloing, (maybe a lot, since my travel isn't going to be too rapid. So I went with a Sentinel (not old school, but what ya gonna do) for a bit of survivability. Went with something I wouldn't normally do. Took EB/Energy Aura (I want the KB when I solo). I skipped DFB and went to Davies, since I was a tech hero. Ran his arc, plus part of Nandelu's, plus Jiminez in KR. I led a team through part of the last KR arc, til I hit 8, at which point I had to log off. When I got back, I jumped on Frostfire team, set at +2 (we were spawning reds and purps mostly, and since the leader wasn't running XP boost, it stayed that way almost all mish). Trained a lot, then I got on Pos1 and 2, in succession, with the same leader.
Sitting at 19 now, and facing the usual END problems. Likely will do some badge runs for AP and E:GC, then spend some merit to grab stuff I can sell. I figure I'll do some crafting. Then again, I may not, I might just relegate myself to DO's, then SO's, and just do that.
What I'm finding, other than the slower pace, is:
(1) You really go through a lot of lore that presages things later down the road. For example, when I get introduced to superadine, and hit the lab, it's the same lab used later on by Veles in the Stockwell arc.
(2) Also did some things I haven't done at all since reboot. Had a "Kill 20 Skulls" in PP, followed by a door mish there (did this with my lowbie team).
(3) You get a lot of time to fiddle with powers, combos, attack chains, all that. If I were a new player (again), it would be a pretty soft landing to get going (esp. if I'd played one of the old tutorials).
(4) Fear. Those lowbie zones can be a pain, depending on where you are. We hit PP, looking for Skulls, and there were lots of Reds and Purps. When running mishes without XP boost, you can't consistently depend on leveling mid-mish to make it easier. This was actually a thing in FF (though I wasn't leading). Frostfire actually lasted awhile, since he wasn’t nerfed to nothing by leader levelling. Lead Scorchers were a pain that entire mission. It was the funnest FF run I've had since we came back.
At this point, the only thing I am yearning for is Afterburner. I've put it off for other things, but I'm really going to need it to use old school travel. I log the toon out at WW's so I can eventually get market TP. I plan to log out at First Word location that gives you Psychic DR badge (can't remember the name). Planning on getting Bank abilities from Talos on, since I really don't need temps thanks to having flight (which I got early, so I wouldn't have to dodge groups in certain zones.). I'd like Pocket D TP, but I really have no memory of how you get that. When I played live, it was a gifted ability. I also find myself apologizing to teams that I'm using this whole "Grinder" style of play (which is why I'll likely solo many things, outside TF's, and radio teams).
On the whole, it's been interesting. The game flies by less, and I'm filing all sorts of mental notes from mishes for my AE scripting.