I played through the base game as well as both official DLCs, and that was great - good gameplay, good stories, interesting mechanics. Then I modded with [Un]Finished Business which opens the door to more than would have been possible in the base game (due to SRD reasons). It's a reasonable facsimile of desktop 5e with a few changes here and there. There are people who put a LOT of work and time into making custom campaigns, and many are fantastic. With the mod you can go to lvl 20, and all the classes are fleshed out that high. Great work by TA to put in the Dungeon Maker to allow for this to keep the game going for years after it would normally have run its course. Hopefully their next project expands on that idea and they take the time to more fully flesh it out. Me and my friends (we play 5 or 6 player multiplayer - thanks to the UB mod) have many hundreds of hours in the game and have run multiple characters from level 1 through to lvl 12 through 19 (nobody hit 20 yet, but it's possible :) ).
