FlyerTalk Evangelist
Join Date: Oct 2004
Location: MUC/LAX/SMV
Programs: LH, UA, BD, AA, NW, FB, NH, AC, Sixt, Hertz, Avis, *W, HH, Marriott, PC, Leaders Club, AMEX
Posts: 12,406
Well, the OP's tavel pattern looks like it's reasonable to make and keep both 1K and SEN status. Best of both worlds. LH is much more generous with status and award mileage on RTWs in C and F, especially on non-UA and non-LH carriers. Makes flying SQ, TG, NH etc. in F quite enjoyable mileage-wise.
Also, the SEN card offers free lounge access throughout North America. The OP might effectivley lose one single SWU every two years: when requalifying for SEN and NOT going over the 150K threshold on MP in that very year. It's only one single upgrade lost, because M&M will also award him an intercontinental e-upgrade after requalifying.
Hedging you bets is reasonable, and it's always good to have options and be able to use the advantages of more than one program.