As Stoner81 advised, putting points into Grim Baricade for survivability is a good thing. Here is some info
https://ddowiki.com/page/Reaper_enhancements
Generally while leveling put 25-30 points into the defensive tree, then start putting points into whichever offensive tree you need.
Any suggestion for where to put reaper points? When I last played Reaper didn't exist.
I've put my first 5 points into Grim barricade for now since i figure tankiness is always good.
Yeah extra hp/mrr or prr/saves is a big benefit at early levels, though do consider for say 8 points in offensive tree you can get +6 RP which = 6% damage if you have no ranged power which fairly likely in early heroics) +1 tactics +1 to hit/dmg and 32 hp, that’s pretty good return vs dmg mitigation /saves and 74 hp and possibly extra +1 hp/level from con, usually solution to most issues in ddo is more dps for a dps build…
8 points in defensive tree gives 1st core = 10 hp, 5 prr or mrr, 2 con
= 74 hp+1 hp/lvl con bonus and 2-3pct dmg mitigation to either prr or mrr (just example based on going from 40 to 45 rating) which not as significant imho
In mid/later heroics the RP benefit trails off as you start to get it from other sources whereas light armored, ranged toons always have issues getting enough mrr (evasion helps you but not against single target spells like horrid wilting or rays) it costs some plat but might be worth swapping around mid heroics when you start getting t5 abilities
Staying at cap next chance you have and farming some rxp until you have 15-20 points is advisable to boost both defense and offense at lvl 4+ in subsequent lives