I do not dislike it, no, just wanted to be careful not to 'borrow' from another source.
I agree with giving Fëanor's sword a Quenya name; he never learned Sindarin, any way.
Some name elements to consider (from Ardalambion's
Quettaparma Quenyanna); I'll look up more options after perusing the mythological list:
SHARP
maica (piercing),
aica (fell, terrible, dire; this gloss "sharp" is isolated from one translation of
Aicanáro SHARP-FLAME
Aicanáro "Fell Fire, Aegnor"
(so in Silm:435; MR:323 has Aicanár) In the printed Etymologies, a word for "keen, sharp, acute" is given as "
laike" in the entry
LAIK, but not only is this a misreading for "
laika" (VT45:25): the conceptual validity of this word may be questioned because
laika,
laica is the word for "green" in later sources.
–Silm:434, AYAK, MR:323, LAIK
FIERY
uruitë,
úruva (The stem from which these words are derived was struck out in Etym. However, several words that must be derived from this stem occur in LotR, indicating that Tolkien restored it. LT1:248 also gives
sára "fiery", but this word is probably obsoleted by
sára "bitter" in Etym.) –UR
FLAME
nár,
nárë (also translated "fire"),
velca; SHARP-FLAME
Aicanáro (so in Silm:435; MR:323 has Aicanár), (Aegnor, Fell Fire), RED FLAME
rúnya; HEART OF FLAME
Naira (a name of the Sun), FLAME-COLOURED
culina,
culda (golden-red)
–NAR1, LT1:260, Silm:437, MR:198, KUL
FLASHING OR [?STARRY] LIGHT
élë –VT45:12
FORTH
et- (prefix) (out). Also attested with various pronominal suffixes, e.g.
etel or
etelyë *”out of you”. GO FORTH TOWARDS
tenta-, pa.t.
tentanë(with the thing approached as direct object). –ET, VT49:12, 23
STABBING SWORD (short)
ecet (broad-bladed sword) –UT:284/432
SWORD
macil; BROAD SWORD
lango (also = prow of a ship), LARGE SWORD
falquan; SHORT STABBING SWORD, BROAD-BLADED SWORD
ecet, SWORD BLADE
maica(also blade of any cutting tool or weapon, but esp. sword-blade), †
russë (corruscation), SWORDSMAN
macar. –MAK/LT1:259/VT39:11/VT45:32, LAG, LT2:341, UT:284/432, VT39:11, RUS, VT39:11